Switch-stand and switch-operating mechanism



(No ModeL) J. H. QUIMBY. 7 SWITGH STAND AND SWITGH'OPERATING MEGHANISM. No. 512,216. Patented Jan. Z, 1894 m: NATIONAL umaemmmm cum:

wnsmmaron. av 04 NITED STATES PATENT JOHN HJQUIMBY, OF CONCORD, NEW HAMPSHIRE.

SPECIFICATION forming part of Letters Patent No. 512,216, dated January 2, 1894.

Application filed August 12, 1893- Serial No. 482,978. (No model.)

To all whom it may concern.-

Be it known that I, JOHN H. QUIlVIBY, acitizen of the United States, residing at Concord, in the county of Merrimac and State of New Hampshire, have invented certain new and useful Improvements in Switch-Stands and Switch-Operating Mechanism; andI do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to switch operating mechanism designed to be controlled byhand.

The essential features in theinvention being certain novelties in construction whereby a switch cannot be left open;2'. e., the rolling stock may never leave the iron while passing over the switch.

The invention will be fully set forth in the following specification and claims and clearly illustrated in the accompanying drawings, forming a part thereof, in which- Figure 1, is a longitudinal sectional elevation of the switch stand and inclosed mechanism, Fig. 2, being a general plan view of the same having the covering plate removed. Fig. 3, is a broken plan View illustrating the impossibility of accidentally leaving the switch operating mechanism in a position to derail a train.

Corresponding letters denote like parts throughout the various views.

A is a bed plate, resting on the sleepers at a convenient distance outside of a rail. This plate is provided with ears a, near one end and near the opposite end is a perforation a. The target shaft B, is mounted in the perforation a, of the plate piece A, and upon the end projecting beneath said plate is mounted a crank O, to which is pivoted one end of a rod D, which may be attached to the switch. Just above said plate A and upon said rod B, is mounted a duplex lever E, consisting of an arm having aperforation midway from either end for mounting upon the shaft B, and projections e at one side, between which may rest one end of a connecting rod F, pivotally connected at its opposite end to a spring actuated bar H, mounted within the ears to, of the said bed plate A.

Upon that end of the connecting rod F, ad-

' jacent to the lever E, is preferably mounted on pin g, a sheave or friction roll G, which may be grooved to receive the edge of said duplex lever E, and play thereon between its projections ee, from one to the other, as the target shaft is rotated one way or the other. This result is attained by means of the spring actuated rod H, which throws the free end of rod F, against one of the projections e at every movement of the target shaft, and locks itin either position as required.

The spring K, is mounted on the smaller portion 71?, of the rod H, between the collars 7rlc', the former being located at the shoulder formed by the enlarged portion h, of said rod which is slotted and perforated as shown to receive the rod F, and pivot pin h, and the latter bears against a sleeve I, which is threaded to fit the car a, of the plate piece A, and forms a bearing for said rod H. The rod H, reciprocates to and fro within said sleeve whenever the target shaft B, is rotated, and if it becomes necessary to increase or decrease the tension of the spring K, this sleeve, which forms the rear bearing for the spring, is rotated within said ear or, as may be required to either shorten or lengthen the distance between the collars k-k, and a nut J, which is threaded to said sleeve for the purpose is then turned against said ear a, to hold said sleeve in the position desired.

Any form of target may be attached to the shaft B, and a suitable cap or cover A, having a perforation a through which the shaft 13, may rise, is provided as proper protection.

In Fig. 3, the edge e, on the duplex crank E, over which the sheave G, must pass in slipping from one to the other of the projections e, is bulged out or convexed as at 2 and in dotted lines the sheave G, is shown as in a position to slip to either side, which would immediately tip the duplex crank E, and set a switch either for the main track or a siding, from which position it cannot be changed except by a movement of the target shaft which can be locked in the usual manner.

Having described my invention, what I claim is- 1. In switch operating mechanism having the ordinary stand, target shaft, and rod connecting the switch with a crank on said target shaft, the combination of a spring actuated and laterally playing or oscillating con- FFIoE.

necting rod, with a duplex crank or lever, having projections equidistant from its centerand lilQl nted rigidly upon said target shaft.

2. In switch operating mechanism comprising a suitable stand and target shafthaving a crank and a rod connecting the latter with Y a switch,the combination of a spring actuated and laterally playing or oscillating connecting rod with a duplex lever or crank, having IO projections equidistantfrom its center, mounted upon said target shaft, and asuitable ten sion regulating device for the springactuating said oscillating rod, all substantially for the purpose set forth.

In testimony whereof I affix my signaturein :5

presence of two witnesses.

JOHN H; QUIMBY. Witnesses:

J. B. THURS'ION, CARRIE E. EVANS. 

